As far as seatbelts go, as soon as we started climbing out, the jumpers usually took them off. They were supposed to stay onboard for any emergency below 2500 feet, but you couldn't trust them to. We had an Otter blow an engine once right at 2500'. The pilot told the guy in the right seat to tell everyone to stay strapped in as he started back to the field. The right seater took one look in the back, turned back around, and said, "Tell who ?"
There was only one Teva and a pair of goggles remaining. That load got strung across the countryside with more than a few AADs firing. Needless to say, the boss man wasn't too happy.